living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Thallobionta
         Division Chlorophycota see Phylum Chlorophyta Pascher (1914)
           Class Chlorophyceae Wille (1884) - chlorophytes
             Order Volvocales Oltmanns (1904) see Order Chlamydomonadales F.E. Fritsch
               Family Haematococcaceae G.M. Sm. (1950) see Family Stephanosphaeraceae Korshikov (1938)
                 Genus Haematococcus J. von Flot. (1844)
                 Genus Stephanosphaera Cohn (1852)